Utica MGB125HID not working.

Here it goes...Utica model MGB125HID Serial# CT04940 not working all the time. What I found out so far is this water on floor and what I believe is the honeywell gas valve (VR8204/8304) when opened manually alows the heater to work just fine but it does not work by itself. Currently -5 degress outside! Please help. Thanks J.

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Last edited by AF4501; 01-07-2010 at 12:41 PM.
Reason: Got it fixed. Look in last post, maybe help you!

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The water is just from the "overflow" valve and dripping only. pressure is good and temp is not to high eigther, when its running. board is a ok except for the valve that has honeywell stamped/embosed on it.

The only gas you should be able to produce manually from that valve is pilot gas. If you are getting main burner gas manually you need to replace that valve before it causes a hazardous situation. The leaking relief valve should not be leaking. What is the pressure in the system? If the system is low on water and you have a low water cut out you will have burner issues. Might be best to call a pro.

I mistook this valve. Its not a valve but it seems to be like a reset switch i.e. electrical. When kept open heater runs fine but the heater will not run properly on its own. I'm afaid this switch is a safety switch. The cause for the heater to turn off stay off is unknown. But that being said when kept open water pressure is good and water temp is good no safety problems there. Might be an electrical issue. I hope this will help J.

Its all fixed now thanks for all the help! It turned out to be one of the zone valves was not working. Pro fixed it no problem. I hope this may help others, look to the zone valves first. Check them to see if any of the wires look burned. Again thanks everyone J.